$info:blue;
$error:green;

//声明函数 混入器
@mixin border-radius {
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    border-radius: 50%;
}

@mixin h-ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    
    //嵌套
    li{
        list-style: none;
    }
}

//参数
@mixin border($w,$s,$c) {
    border: $w $s $c;
}


html{
    margin: 0;
}